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what the freakin crap bugger bubble gum bs
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<blockquote data-quote="dmtfabrication" data-source="post: 575292" data-attributes="member: 6825"><p>I would check the o-rings where the gun connects to the drive rollers. They are easily torn or damaged, letting shielding gas out. I have had a Miller gun go bad at the crimp at the gun end. Twisting the gun one way would let the gas out, twisting it another would close the loose crimp and it would weld fine. I had to disassemble the handle to diagnose it.</p><p></p><p>Also check the drive roll tension and make sure it is right. Too loose and the wire won't feed consistently. Too tight and it can squish the wire. It's hard to squish ER70s6, which is probably the hard wire you are using. however if he swapped in a knurled drive roll for flux core wire, the knurl will leave a slight to heavy serrated groove on the wire, causing drag through the liner and the contact tip. This will cause the tips to go bad more quickly.</p></blockquote><p></p>
[QUOTE="dmtfabrication, post: 575292, member: 6825"] I would check the o-rings where the gun connects to the drive rollers. They are easily torn or damaged, letting shielding gas out. I have had a Miller gun go bad at the crimp at the gun end. Twisting the gun one way would let the gas out, twisting it another would close the loose crimp and it would weld fine. I had to disassemble the handle to diagnose it. Also check the drive roll tension and make sure it is right. Too loose and the wire won't feed consistently. Too tight and it can squish the wire. It's hard to squish ER70s6, which is probably the hard wire you are using. however if he swapped in a knurled drive roll for flux core wire, the knurl will leave a slight to heavy serrated groove on the wire, causing drag through the liner and the contact tip. This will cause the tips to go bad more quickly. [/QUOTE]
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what the freakin crap bugger bubble gum bs
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